diff --git a/src/main/java/ch/unibas/dmi/dbis/cs108/multiplayer/helpers/GuiParameters.java b/src/main/java/ch/unibas/dmi/dbis/cs108/multiplayer/helpers/GuiParameters.java
new file mode 100644
index 0000000..0b50caf
--- /dev/null
+++ b/src/main/java/ch/unibas/dmi/dbis/cs108/multiplayer/helpers/GuiParameters.java
@@ -0,0 +1,30 @@
+package ch.unibas.dmi.dbis.cs108.multiplayer.helpers;
+
+/**
+ * This class contains all parameters for the PTGUI protocol message
+ */
+public class GuiParameters {
+
+  /**
+   * Tells GUI to update the gameStateModel, in the form {@code UPDATE$name:role:kickedOff$name:role:kickedOff} ... usw.
+   */
+  public static final String updateGameState = "UPDATE";
+  /**
+   * Tells Gui, that the following statement after $, is a String containing the listOfLobbies
+   */
+  public static final String listOfLobbies = "LOBBIES";
+
+  /**
+   * Tells Gui, that what follows is a list of players (per Lobby?)
+   */
+  public static final String listOfPLayers = "PLAYERS";
+
+  /**
+   * Tells Gui, that the passenger at position {@code position} has heard some noise
+   * Form: {@code NOISE$position$}
+   */
+  public static final String noiseHeardAtPosition = "NOISE";
+
+
+
+}
diff --git a/src/main/java/ch/unibas/dmi/dbis/cs108/multiplayer/helpers/Protocol.java b/src/main/java/ch/unibas/dmi/dbis/cs108/multiplayer/helpers/Protocol.java
index 2fc4bad..2e8b596 100644
--- a/src/main/java/ch/unibas/dmi/dbis/cs108/multiplayer/helpers/Protocol.java
+++ b/src/main/java/ch/unibas/dmi/dbis/cs108/multiplayer/helpers/Protocol.java
@@ -194,5 +194,12 @@ public class Protocol {
    */
   public static final String changedUserName = "CHNAM";
 
+  /**
+   * Handles all information that the gui of the client needs. The Form is {@code PTGUI$parameters$msg}
+   * where the parameter tells the gui to do different things according to {@link GuiParameters} and the message
+   * contains a certain information i.e. who is where in the train
+   */
+  public static final String printToGUI = "PTGUI";
+
 
 }